全国微肥研讨会于1991年7月1日至4日在青岛市召开。来自全国土肥系统的各省、直辖市、计划单列市长期从事微肥推广工作的代表共40余人出席了会议。会议由农业部农业司主持。会议总结交流了“七五”期间推广微量元素肥料的现状及施用技术上的主要经验; The national fertilizer seminar was held in Qingdao from July 1 to July 1991. More than 40 representatives from various provinces, municipalities directly under the central government and cities specifically designated in the state plan to promote the use of trace fertilizers attended the meeting. The meeting was presided over by the Agricultural Department of the Ministry of Agriculture. The meeting summed up the exchange of the status quo and the main experience in the application of trace element fertilizers during the “Seventh Five-Year Plan” period.